In regard to a kissing cousin relationship the initial courtship may be allowed to begin at a very early stage simply because as children cousins may be exposed to one another in their home environment and thereby be able to develop a relationship comparable to the one that their parents already possess. What actually triggers emotional romantic responses in individuals is highly complex when analyzing the composition of a kissing cousin relationship. Initially there is a convenience factor at play whereby two young individuals are given the freedom to start and continue a contact through the family circle. Initially this removes any obstacles found in ordinary relationship whereby there is a need to meet parents and other relatives therefore a comfort zone exists between kissing cousin relationships not found elsewhere. Additionally as a kissing cousin relationship develops as the cousins mature it is quite easy to envisage the family as a group recognizing the emotional sympathy that may exist between cousins and, provided no other barriers exist i.e. family arguments etc, some families may even consider promoting the development of a kissing cousin relationship. It is certainly could be argued that an opportunity to kiss your cousin, should you see them regularly, is more likely to present itself than is likely with a school or work colleague with whom you have no family connection. In addition to be seen to kiss your cousin would possibly be less traumatic to the family as a group.
Against a kissing cousin relationship is the possibility of the blood line sharing too many common components thereby making children produced by such a couple somehow abnormal. Legislation around the world does not permit any marriage that might cause this kind of harm to children and there is argument that allowing even distant cousins to wed heightens the possibility of creating abnormal offspring. The issues with a kissing cousin relationship are highly charged and emotional as they impact on everyone especially the other close relatives. Under analysis therefore a kissing cousin relationship will always be difficult to be completely objective as it will call into question moral, religious and instinctive concerns that arguably make legislation take second place.
Possibly because the majority of people do themselves wish to find a true love experience and because a kissing cousin relationship possesses both the possibility of such a thing together with a potentially fundamental flaw this issue is never likely to be uncomplicated, except perhaps for the two individuals concerned.